Pole machine



D. B. HANNA.

POLE MACHINE APPLICATION FILED MAY 22. 1919.

Patented Mar. 28, 1922.

3 SHEETS-SHEET I.

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WITNESS 18 INVINTOI.

n. B. 5 mm POLE MACHINE.

APPLICATION FILED MAY 22, H919 Patented Mar. 28, 1922.

3 SHETS-SHEET 2.

INVENTOB.

D. B. HANNA.

POLE MACHINE.

APPLICATION FILED MAY22.1919.

1,410,751 Patented Mar- 28,1922.

3 SHLEIS SHEET 3 DAVID B. Hanna, or cmcaoo,.mninors, Assmmm romss-mrconcnn'rn mmnrlc'rs coerce-anon, or cnzrcaoo, unmozs, a eonronarxon orYou: nacnmn T 0 all whom it may. concern Be it known that I, DAVIDB.HANNA, a citizen of the United States, residing at Chicago, in thecounty of Cookiand State of Illinois, have invented. certain new anduseful Improvements] in Pole Machines, of which the followin isa'speeification.

This invention re ates to pole making machines for making concrete polesand the like. and it has for its, rimary object the provision of animprove means for directly driving the pole mold.

Another object of the invention residesin the provision of an improveddriving coupling so constructed that the molds may be expeditiouslyhandled inthe machine and readily coupled and uncoupled to and from themotor.

Still anothercbject of my invention resides in the provision of animproved driving coupling which readily accommodates itself tovariations in the 'size of the mold and also to irregularities in themold.

The foregoing together with such other objects as may hereinafterappear, orare incident tomy invention, I obtain by means of an improvedconstruction which 'I have illustrated in preferred form in the acconnpanying drawings wherein:

Figure 1 s a side elevation of a portion of a pole machine embodying myimprovements; Figure 2 is a cross section-through the machine, drawn onan enlarged scale, illustrating the manner in which the mold isrevolubly supported in the machine: Figure 3 is a cross section takenthrough the .coupling on the line 3-3 of Figure 4: Filgurc 4 is asection taken on the line 4-1 Jf Figure illustrating the coupling in;eiul elevation: Figure 5 is a side elevation of a modification of myinvention: and Figures (5 and 7 are views of details thcreot'. Figure 6being a section taken on the line 6-4; of Figure The general arrangementof the machine is substantially like that shown and de scribed in myro-pending application tiled Mar 22. 1919. Serial Number 298.37. andfoxthe purpose of this specification i will suflicc to say that themachine in general comprises a base A,t-omposed of suitable structuralmembers (embedded in concrete. Suitably mounted in bearing blocks 8 inthe base are pairs of spaced rollers 9, having Specification of LettersPatent. Paf ented B131, 28, 192 2,

2919. Serial No. 288,577.

on the exterior of the pole mold B, and the mold being supported on therollers 9 -ineans of vokelike members C, pivoted on the shafts lfl ofthe rollers 9 on one side of the machine, said member C being provided\vlth rollers 11 and 12 adapted to engage the tires 10.

Referring now to the driving mechanism,

it will be seen that I have provided a motor D which is carried on asuitable base 13 Supported on the main frame work or base A at an endthereof opposite an end of the.--

mold. Rotatably mounted on the shaft 14 of the motor D I provide asleeve-like driving coupling E havin an outwardly extending annularflange or Tip 15, the inside diameter of which is considerably largerthan the out- -side diameter of the mold B. Adjustably -mounted in thecoupling, I provide a plu rality of radial centering or adjusting blocks16 adapted to engage flatted portions 17 formed on the peri hery of theend section of the mold. The locks 16 form the driving connectionbetween the coupling E and the mold, and they are forced into tightengagement with the mold by means of the studs 18. This arrangement inaddition to providing a driving connection, permits of the couplingbeing adjusted to molds of difi'erent sizes, and also permits thecoupling to be accommodated to irregularities in the mold. If desiredthe lower pair of blocks 16 may be rigid,

As described in the aforesaid two-pending application, the sectionalhalves of the mold B are bolted together. with 'such reinforcement asmay be employed mounted in the interior thereof. after vfliich the moldis partially filled with concrete. The mold is then picked up by a hoistor other suitable mechanism and placed in the machine with the tires 10resting upon the flanged rollers 9. it being kept in mind that for thispurpose the ycike-hke members C ale swung to one side about the shafts10 as an axis. In placing the mold in position, the end next the motoris inserted into the couplings E. and thereafter blocks 16 are adjustedas to tightly engage the mold, and the members C are swung intoposition. The mold is now rotated until the pole is formed, after whichthe blocks 16 are loosencd the members .C swung to retracted position,and the mold removed, when the machine is ready for the reception ofanother mold In some-fisesit may be desirable, in order to facilitateassemblage. to mount the coupling member. 1) Vin such manner that it imay lie retracted-to an moperiitive position p ernrltting'the mold to bea modihed form of lowered into position, properly engaging the rollers9. and afterwards advanced to fit over the eml of the mold in the mannerpreviously described. For this purpose a splined connection sun-h asshown at 19 in Figure 3 may he utilized. In Fi ures 5. (i and 7, l haveillustrated driving connection hetween the mold the motor. In accordancewith this embodiment of my invention, th shaft 14 of the motor hashcircular member E keyed'to gn end thereof, such member having aplurality of grooves 21 which are preferably given'a taper as shown in Figure 6. The mold is provided at an end thereof with a, rrespondifigmember E which is proy'dbd with a plurality of tongues 22 adaptedlo litthe grooves 211 By this arrange 7 ,n t'it will be seen that it ispossible to est zhlish the driving connection very is being loweredinto.

the machine.

2. pole making murhine comprising in i-ombiuation. a support. a moldsupported therein for rotation. a motor opposite an end of the mold anda coupling member adapted to rcceive unend of the mold. said couplingbeing mounted for longitudinal movement \vltli reference to the mold. V

3. A pole making'murhiue comprising in comhinution u rotntahle mold. amotor opposite an end of the mold. and a coupling de- .vice adapted toreceive an end of the mold,- said device being so constituted as to viariuhly and relcasuhly secure it to the mold.

In testimony whereof, I have hereunto DAVID B. HANNA.

signed my name.

